Police have launched a murder inquiry after the 20-year-old man who was seriously assaulted at Cobham Services died today.The man was attacked by two men and left with substantial head injuries during a fight between two groups of people at the services on Monday.The two groups are believed to have known each other and started fighting at around 3.15pm.READ MORE: Find out where new parking restrictions are proposed on more than 50 roads in Mole ValleyThe victim was flown to St George's Hospital...
